I wrote:
> Ah. I don't feel like trawling the archives for the discussion right now,
> but I believe this was an intentional change to make the behavior more
> consistent.
Oh ... a quick look in the commit log finds the relevant discussion:
https://www.postgresql.org/message-id/flat/9b4ea968-753f-4b5f-b46c-d7d3bf7c8f90%40manitou-mail.org
regards, tom lane